Search found 6 matches

Tue Dec 31, 2013 1:16 pm
Forum: Combinatorics
Topic: Two coins
Replies: 4
Views: 3344

Re: Two coins

What is P(HHT) then? Is it undefined or something else? Because you have no idea what coin you are flipping?
Tue Dec 31, 2013 8:48 am
Forum: Combinatorics
Topic: Two coins
Replies: 4
Views: 3344

Re: Two coins

Thanks!
Mon Dec 30, 2013 12:23 pm
Forum: Combinatorics
Topic: Two coins
Replies: 4
Views: 3344

Two coins

Suppose you have 2 identical-looking coins: one that is fair and one that comes up heads 75% of the time. You flip one coin 3 times and it comes up as H-H-T. What is the chance that the coin you picked is the fair one?
Sat Jan 19, 2013 2:00 am
Forum: Geometry
Topic: Venn diagram
Replies: 3
Views: 9836

Re: Venn diagram

Can you tell me how you worked out that equation? And what 2.30988 is in terms of pi?

Thanks a lot!
Fri Jan 18, 2013 12:48 pm
Forum: Geometry
Topic: Venn diagram
Replies: 3
Views: 9836

Venn diagram

Imagine two congruent circles that intersect at exactly two points A and B. One of the circles has a center C. What is the measure of angle ACB such that the area of the intersection between the two circles is equal to the area of one circle minus the area of intersection?
Mon Jun 11, 2012 9:50 am
Forum: Number
Topic: Summations
Replies: 1
Views: 2844

Summations

please refer to attached picture